<template>
  <div>
    <!-- top-webview -->
    <div id="slider" class="mui-slider">
      <div
        id="sliderSegmentedControl"
        class="mui-scroll-wrapper mui-slider-indicator mui-segmented-control mui-segmented-control-inverted"
      >
        <div class="mui-scroll">
          <a
            :class="['mui-control-item', item.id === 0 ? 'mui-active' : '']"
            v-for="item in cates"
            :key="item.id"
            @tap="getImageList(item.id)"
          >{{ item.title }}</a>
        </div>
      </div>
    </div>

    <!-- photolist -->
    <ul class="photo-list">
      <router-link v-for="item in list" :key="item.id" :to="'/home/photolist/' + com_name +'/' + item.id" tag="li">
        <img v-lazy="item.img_url">
        <div class="info">
          <h2 class="info-title">{{ item.title }}</h2>
          <div class="infor-body">{{ item.zhaiyao }}</div>
        </div>
      </router-link>
    </ul>

  </div>
</template>

<script>
// 导入mui.min.js文件
import mui from "../../lib/mui/js/mui.min.js";

export default {
  data() {
    return {
      cates: [],
      list: [],
      com_name: 'photoinfo'
    };
  },
  mounted() {
    mui(".mui-scroll-wrapper").scroll({
      deceleration: 0.0005 //flick 减速系数，系数越大，滚动速度越慢，滚动距离越小，默认值0.0006
    });
  },
  created() {
    this.getPhotoList();
    this.getImageList(0); // 默认进入页面，请求 全部 图片
  },
  methods: {
    getPhotoList() {
      this.$http.get("top-webview.php").then(result => {
        if (result.body.status === 0) {
          result.body.message.unshift({ id: 0, title: "全部" });
          this.cates = result.body.message;
        }
      });
    },
    getImageList(cateid){
      this.$http.get("photolist.php?cateid=" + cateid).then(result => {
        if (result.body.status === 0) {
          this.list = result.body.message
        }
      })
    }
  }
};
</script>

<style lang="scss" scoped>
* {
  touch-action: pan-y; // 为了阻止报错：[Intervention] Unable to preventDefault inside passive event listener due to target being treated as passive.
}


.photo-list {
  list-style: none;
  margin: 0;
  padding: 10px;
  padding-bottom: 0;

  li {
    position: relative;
    margin-bottom: 10px;
    background-color: #ccc;
    text-align: center;
    box-shadow: 0 0 9px #999;

    .info {
      position: absolute;
      bottom: 0;
      max-height: 84px;
      background-color: rgba(0, 0, 0, 0.4);
      color: #fff;
      text-align: left;
      overflow: hidden;

      .info-title {
        font-size: 14px;
      } 
      .info-body {
        font-size: 13px;
      }    
    }

    img{
      width: 100%;
      vertical-align: middle;
    }
    
    img[lazy=loading] {
      width: 40px;
      height: 300px;
      margin: auto;
    }
  }
}
</style>
